I've the same issue using win Vista, TOS DI 5.1.1 r84309 and a MSSQL server 2005 express
I've had success using the generic JDBC connection:
The driver jar I am using is sqljdbc4.jar.
There was another post with this suggestion but I cannot find it
Not exactly the same problem, but I can't retrieve the schema... my connection is working...
Is there a specific configuration for sql server?
(SQL Server version: 2008 R2
TOSDI version: 5.2.2)